The article concerns the implementation of the HBIM approach (Historic Building Information Modeling) for the refurbishment and preservation of historic buildings. The scientific and technical community confirmed the efficacy of BIM tools for knowledge managing and sharing, still noting a limited research of Building Conditions Assessment in HBIM. Starting with observed criticalities and potentialities, we propose a method for sharing and re-using information acquired through archival analysis, damage survey and diagnostic investigation. Therefore, we formalize the information requirements as input in BIM model and sharing modes for project and construction management.